mirrord-prev-env SKILL.md skillA

mirrord-prev-env from metalbear-co/mirrord is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add metalbear-co/mirrord/mirrord-prev-env@v2.9

Pins v2.9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
metalbear-co/mirrord
Path
mirrord/mcp/corpus/skills/mirrord-prev-env/SKILL.md
Versions recorded
4
Latest version
v2.9, committed Nov 2, 2026
First version recorded
Oct 7, 2026
Size
44,011 bytes
Repository stars
5,401
License
MIT

Help users create and manage mirrord preview environments — running a modified service as an isolated pod in a shared Kubernetes cluster, scoped by an environment key and HTTP/queue traffic filtering, so teams can validate and review changes against real traffic without affecting live services. Use when a developer wants to run "mirrord preview" ad hoc, share a preview via a link (mirrord-share-ingress), or wire preview environments into CI with the metalbear-co/mirrord-preview GitHub Action (e.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Mirrord Preview Environment Skill

## Purpose

Help users create and manage **mirrord preview environments**. A preview environment runs only the *modified* service(s) as isolated pods in a shared cluster, while their dependencies reach the rest of the main cluster through mirrord. Traffic is scoped by an **environment key** and a filter, so a change can be collaborated on, validated, and reviewed against **real traffic without affecting live services**.

This skill covers two modes:

1. **Ad-hoc (developer) mode** — a developer runs the `mirrord preview` CLI (`start` / `status` / `stop`) directly.
2. **CI mode** — the `metalbear-co/mirrord-preview` GitHub Action wires previews into a PR lifecycle (start on open/push, stop on close).

## When to Use This Skill

Trigger on questions like:
- "How do I run a mirrord preview environment?"
- "Set up per-PR preview environments with mirrord"
- "How do I use the mirrord-preview GitHub Action?"
- "`mirrord preview start` — what config and flags do I need?"
- "How do I route only my traffic to the preview pod?"
- "How do I check / stop a preview session?"

## Security (must follow)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add metalbear-co/mirrord/mirrord-prev-env@sha256:3446c3009b6f7863

The line at the top of this page pins the label v2.9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rp3znrvdyir5oyt2.svg)](https://markdownregistry.com/a/art_rp3znrvdyir5oyt2)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Oct 7, 2026 and Nov 2, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
v2.9 latest2026-11-02 c34ca25 44,011 BA view · diff
v2.82026-10-21 a138a34 40,959 BA view · diff
v2.72026-10-11 31fe829 36,811 BA view · diff
v2.62026-10-07 651261d 35,921 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (44011 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

metalbear-co/mirrord · 5,401 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rp3znrvdyir5oyt2
GET https://markdownregistry.com/api/v1/resolve?ref=metalbear-co/mirrord/mirrord-prev-env
GET https://markdownregistry.com/api/v1/blob/3446c3009b6f78639d612a724c9ec281eeea2e88a850b8c884cde15fe20d8111

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in metalbear-co/mirrord

Other files named mirrord-prev-env

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metalbear-co/skills · skills/mirrord-prev-env/SKILL.md · Help users create and manage mirrord preview environments — running a modified service as an isolated pod in a shared…
v2.9 · audit A · 29 stars

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